US3030900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic seamer
Assignee: Niagara Machine and Tool Works
•
Filing: 1958-04-11
•
Granted: 1962-04-24
•
Expires: 1978-04-11
Abstract
No abstract record available.
Inventors
- 👤 George E Munschauer
- 👤 Leiv S Platou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:39
CPC Classifications
B; B21; B21D; B21D51/00; B21D51/16; B21D51/26; B21D51/30; B21D51/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1275867A
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US1982711A
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US2228651A
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US2307544A
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US2516322A
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US2559125A
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US2779301A
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US2805635A
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US2845887A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-23 | 1965-10-23 | 1966-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-23 | 1969-10-23 | 1970-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-23 | 1973-10-23 | 1974-04-24 | $7700.00 | Window Closed / Lapsed |